Compositions: coating or plastic – Coating or plastic compositions – Silicon containing other than solely as silicon dioxide or...
Patent
1998-03-30
1999-07-06
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Silicon containing other than solely as silicon dioxide or...
106724, 106806, 428447, C09D18305
Patent
active
059192968
ABSTRACT:
A storage-stable composition adapted for imparting water-repellent properties to masonry materials comprises an aqueous emulsion which defines a continuous aqueous phase and a discontinuous organosilicon phase. The emulsion is formulated from components comprising: (A) a water-insoluble alkoxysilane of the average general formula R.sub.n --Si--R'.sub.(4-n) wherein n is a number from 1 to 2, R is a C.sub.5 -C.sub.20 monovalent hydrocarbon radical and R' is a C.sub.1 -C.sub.4 alkoxy group; (B) a hydrogen-functional polysiloxane having at least two silicon-bonded hydrogen atoms per molecule, at least five siloxy units per molecule and a kinematic viscosity between about 0.5.times.10.sup.-6 and 1,000.times.10.sup.-6 m.sup.2 /sec at 25.degree. C.; (C) an emulsifier; and (D) water. The discontinuous organosilicon phase comprises components (A) and (B) and the continuous aqueous phase comprising said water. Components (A) and (B) being present in the organosilicon phase in a weight ratio of (A):(B) such that said emulsion is physically and chemically stable after storage for six months at room temperature or for six weeks at 50.degree. C.
REFERENCES:
patent: Re33759 (1991-12-01), DePasquale et al.
patent: 5110684 (1992-05-01), Cooper
patent: 5196054 (1993-03-01), Schmuck et al.
Be Anh
Liles Donald Taylor
Wilhelmi Francisco Gerardo Palencia
Brunsman David
Dow Corning Corporation
Jarnholm Arne R.
Troy Timothy J.
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